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<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>concatTest</title>
	<script src="../../dist/Free.js"></script>
</head>
<body>
	<script>
		let arr1 = [1,2];
		let arr2 = [2,3];
		console.log($.arrayUtils.concat(arr1,arr2,"arr2"));
		console.log($.arrayUtils.concat("123"));
	</script>
</body>
</html>